Abstract: The present disclosure discloses a charging device, which comprises an energy storage module, an output interface, a detection unit, a switch module, a control module, and a capacitor. The output interface is configured to be electrically coupled to a load. The detection unit detects electrical parameters of the load and the energy storage module. The switch module is electrically coupled between the energy storage module and the output interface. When the load is electrically coupled to the output interface, the control module turns on the switch module based on the electrical parameters of the load and the energy storage module, to switch on an electrical connection between the energy storage module and the output interface. The capacitor is configured to keep the switch module in an on state steadily when the control module turns on the switch module. The present disclosure also discloses an emergency starting method.

Abstract: A bi-stable solenoid includes a housing, a wire coil, a permanent magnet, an armature, a pin, and a spring. The wire coil is arranged within the housing. The armature is slidably arranged within the housing and is moveable between a first armature position and a second armature position. The pin at least partially extends out of the housing and is slidably engaged by the armature. The spring is biased between the armature and the pin. When the pin encounters an intermediate position between a retracted position and an extended position due to the pin engaging an obstruction, the spring is configured to maintain a biasing force on the pin until the obstruction is removed.

Abstract: An electric current detection apparatus, the electric current detection apparatus is configured to detect an electric current flowing in a solenoid configured to be electrified by a PWM control, the apparatus includes a switch, an electric current value detection portion configured to detect a first electric current value at a first timing corresponding to a timing when the switch transitions from a closed state to an open state, the electric current value detection portion being configured to detect a third electric current value at a third timing, and a second electric current value calculation portion configured to calculate a second electric current value on the basis of the first electric current value and the third electric current value, the second electric current value being an electric current value of the electric current at the second timing.

Abstract: Magnetic latching valves have a housing with first and second ports in controlled fluid communication with one another. Enclosed within the housing is a linearly translatable armature within a solenoid. The armature is movable between open and closed positions and is connected to a poppet valve. A permanent magnet is fixedly seated at a position for magnetically latching the armature in the open position, and a spring is seated with a first end against the poppet valve and a second end against the housing. The spring biases the poppet valve closed when the armature is in the closed position and has a pre-selected spring rate that mechanically relieves pressure if the spring rate is exceeded. The armature is moved to the open position after a pulse of voltage to the solenoid and is in an unpowered state thereafter. Vehicle fuel refueling system are disclosed that include a magnetic latching valve.

Abstract: An apparatus includes a circuit breaker having main contacts configured to be coupled within an electrical line. The circuit breaker also has trip contacts and auxiliary contacts. A protection relay is electrically coupled to the trip contacts of the circuit breaker and is configured to trip the circuit breaker. A trip circuit supervision relay has a first coil electrically coupled to the auxiliary contacts of the circuit breaker and a second coil electrically coupled to the trip contacts of the circuit breaker. The first coil and the second coil are magnetically coupled to each other. The trip circuit supervision relay is single circuit supervision relay that includes both first coil and the second coil and is configured to be magnetically operated by either of the first coil and the second coil.

Abstract: A vehicle opening panel emergency access device, having: a body; a graspable pull member that is able to move between: a retracted position and a deployed position; a retention pin that is designed to occupy: a locking position and a position for releasing the pull member; an electric ejector designed to control the sliding of the retention pin; a control unit for control according to two modes: an unlocking mode in which the electric ejector drives the retention pin from its locking position to its release position; and a percussion mode in which the electric ejector drives the retention pin in oscillation between its locking position and an intermediate position between the locking position and the release position.

Abstract: A vehicle theft-prevention apparatus can include a locking mechanism with an engagement component. The locking mechanism can be engaged via a first action to apply a force on the vehicle when in an engaged state. The locking mechanism can disengage, via a second action, to withdraw the force from the vehicle when in the engaged state. The locking mechanism can maintain a current state of the force in response to the first action and the second action when in a disengaged state. One or more computing devices can receive a command to enable or disable the locking mechanism. In response to receiving the command, the computing device can cause the engagement component to transition the locking mechanism from the disengaged state to the engaged state or from an engaged state to a disengaged state.

Abstract: A transpallet is provided for ground handling of goods stored on a support platform, comprising at least one motorized wheel, an electromechanical parking braking system of the wheel adapted to take on a stop configuration when not energized and a release configuration when energized and an electric power supply assembly adapted to supply electric power to the motorized wheel and to the electromechanical parking braking system. An on-board electronic control unit is arranged for the selective handling of the transpallet movement in a motorized mode of movement, a manual mode of movement or a stop mode, depending on the charge level of the electric power supply assembly.

Abstract: A handheld system and method for storing and grinding herbs—such as, but not limited to tobacco, marijuana and the like. The device having three main components: a first component being a two-part, hermetically sealed case allowing herbs to be stored therein; a second component being a crusher with axial star blades; and a third component being a finger wheel allowing a user to rotated said crusher thereby reducing herb clusters to a consistent aggregate according to a user's preference. The hermetically sealed case allowing a user to then store aggregated herbs therein. An object of the invention is to allow a user to crush and store herbs in a portable, sealed container.

Abstract: A driver circuit is provided to connect a charged capacitor through a switch to the inductive windings of an electromagnet for a haptic feedback application. A feedback circuit provides an indication of the current supplied. When the current reaches a desired level, the current is cut off, rather than being controlled. The cutoff level can be slightly below the desired level to allow the desired level to be reached with overshoot. A diode is provided in parallel with the electromagnet winding when the current is shut off, providing a recirculation path that prevents the current from being discharged, thereby dissipating less energy than classical solutions.

Abstract: A bi-stable solenoid includes a housing, a wire coil, a permanent magnet, an armature, a pin, and a spring. The wire coil is arranged within the housing. The armature is slidably arranged within the housing and is moveable between a first armature position and a second armature position. The pin at least partially extends out of the housing and is slidably engaged by the armature. The spring is biased between the armature and the pin. When the pin encounters an intermediate position between a retracted position and an extended position due to the pin engaging an obstruction, the spring is configured to maintain a biasing force on the pin until the obstruction is removed.

Abstract: A coil actuator for low and medium voltage applications comprising a coil electromagnet provided with a single coil winding and a movable anchor and a power and control unit comprising: a power circuit operatively coupled with said coil electromagnet, said power circuit comprising input terminals, at which said power circuit receives an input voltage; a PWM controller operatively coupled with said power circuit, said PWM controller being adapted to control an input current flowing through said power circuit to obtain and maintain an average operating level selected an excitation current feeding said coil electromagnet. Said PWM controller is adapted to set a plurality of reference values for said input current to control said input current, each reference value for said input current being selected among said plurality of reference values depending on the behavior of said input voltage.

Abstract: A semiconductor light source driving device includes: a switching power supply circuit that converts a voltage across direct current (DC) power supply into a DC output voltage and outputs the DC output voltage to a semiconductor light source; and a light source driving circuit connected in series to the semiconductor light source. The switching power supply circuit includes: a switching circuit; an output capacitor; a controller; and an inductor short circuit. The switching circuit includes: a first switching element for voltage control; a second switching element connected in series to the first switching element; and an inductor connected to a connection point between the first and second switching elements. The inductor short circuit includes a diode and a fourth switching element connected in series to the diode.

Abstract: A valve assembly includes an inlet; an outlet; a valve seat between the inlet and the outlet; a valve member which moves between a first valve member position and a second valve member position; and a solenoid subassembly which allows the valve member to move between the first valve member position and the second valve member position. The solenoid subassembly includes a coil having a coil first end and a coil second end; an armature which reciprocates, based on polarity of an electrical current applied to the coil, between a first armature position which allows the valve member to move to the first valve member position and a second armature position which allows the valve member to move to the second valve member position; a first magnet which latches the armature in the first armature position; and a second magnet which latches the armature in the second armature position.

Abstract: An electronic device includes a first input that receives an input signal when the electronic device is in operation, a long L gate comprising a long L transistor, a first activation transistor coupled to a gate of the long L transistor, and a second activation transistor coupled to the gate of the long L transistor. The electronic device also includes a switch directly coupled to a second input of the long L gate, a path directly coupled to a first output of the long L gate, a capacitor coupled to the path, and a second output that when in operation transmits an output signal as a delayed signal with respect to the input signal.

Abstract: The present disclosure relates to a device and method for controlling a solenoid valve of a portable medical device. The portable medical device comprises a power source; an electrically actuated valve, a control unit for regulating at least one of a control voltage and a control current for actuation of the valve, and at least one inertial sensor for detecting and transmitting motion signals representative of external motions applied to the portable medical device. The control unit is configured to regulate the at least one of the control voltage and the control current of the valve as a function of the motion signals of the at least one inertial sensor.

Abstract: The present application discloses a contactor coil control circuit, including a switch control circuit, a drive circuit, a fast turn-off circuit, a diode D1, a first MOS (Metal Oxide Semiconductor) transistor TR1 and a contactor coil.

Abstract: The present invention discloses a stiffness-adjustable electromagnetic spring. The spring includes a central shaft, an intermediate electromagnetic force control component, and two end electromagnetic force control components, where the two end electromagnetic force control components are located on both sides of the intermediate electromagnetic force control component, the two end electromagnetic force control components and the intermediate electromagnetic force control component are both sleeved on the central shaft, and the intermediate electromagnetic force control component is coaxial with the two end electromagnetic force control components. The stiffness of the electromagnetic spring can be controlled online and the nonlinearity can be adjusted.

Abstract: The invention is an electromagnetic inertial force generator that provides a linear output with improved compactness and reliability because it has no radial gaps and only on pair of axial gaps. Radial permanent magnet rings are directly in contact with inner and outer flux cylinders to provide magnetic bias. The magnetic bias flux flows across two axial air gaps to a supporting flux return structure. A current conducting coil drives magnetic flux across the same axial air gaps. The magnetic bias flux is in opposite directions across the two air gaps while the coil flux across the two gaps is in the same direction. The combination of bias flux and coil flux cancels in one gap and add in the other gap producing a net force on an inertial mass and an equal and opposite force on the supporting structure. The resulting force is linear with current through the drive coil.

Abstract: In a low voltage detection circuit having improved detection performance, the low voltage detection circuit includes: a comparison voltage generator for generating a first comparison voltage and a second comparison voltage having a level higher than that of the first comparison voltage by dividing a power voltage; a first comparator for outputting a low voltage detection enable signal by comparing the first comparison voltage with a reference voltage; a second comparator for outputting a detection signal by comparing the second comparison voltage with the reference voltage while the low voltage detection enable signal is being input; a detection signal maintainer for providing a low voltage detection signal to an output terminal according to the detection signal; and an output signal discharger for discharging the low voltage detection signal according to the low voltage detection enable signal.

Abstract: The present application relates to a coil actuator for low and medium voltage applications, which comprise a electromagnet operatively associated with a movable plunger, a power & control unit electrically connected with the electromagnet and first and second input terminals (T1, T2) operatively connected with the power & control unit, wherein an input voltage (VIN) is applied between the first and second input terminals during the operation of the coil actuator. The power & control unit is adapted to provide subsequent launch pulses of drive current (IC) to the electromagnet, which are separated in time by at least a predetermined time interval (TI), in response to subsequent transitions of the input voltage (VIN) from values lower than the first threshold voltage (VTH1) to values higher than the first threshold voltage.

Abstract: In a low voltage detection circuit having improved detection performance, the low voltage detection circuit includes: a comparison voltage generator for generating a first comparison voltage and a second comparison voltage having a level higher than that of the first comparison voltage by dividing a power voltage; a first comparator for outputting a low voltage detection enable signal by comparing the first comparison voltage with a reference voltage; a second comparator for outputting a detection signal by comparing the second comparison voltage with the reference voltage while the low voltage detection enable signal is being input; a detection signal maintainer for providing a low voltage detection signal to an output terminal according to the detection signal; and an output signal discharger for discharging the low voltage detection signal according to the low voltage detection enable signal.

Abstract: In some aspects, methods for controlling a pneumatic system in a plasma arc processing system can include: receiving, by a computing device, a command to begin a plasma processing operation; generating a valve command signal for a valve that includes an operational drive voltage of at least about 125% of a continuous duty cycle coil voltage rating of the valve to open the valve; and once open, adjusting the valve command signal to facilitate a steady state operation to: monitor a steady state operational duty cycle of the valve, the steady state operational duty cycle being determined by comparing the continuous duty cycle coil voltage rating of the valve to an actual operational drive voltage supplied to the valve, and control the operational drive voltage supplied to the valve to maintain a steady state operational duty cycle of the valve at less than about 60% during steady state operation.

Abstract: A circuit includes a first feedforward path configured to determine a state of a first power switch using a first gate control voltage from a gate driver and a source voltage of the first power switch, and to apply a gate driving voltage to a gate of the first power switch based on the determined state of the first power switch; and a first feedback path configured to provide a scaled value of a drain voltage of the first power switch and a scaled value of the source voltage of the first power switch to the gate driver, where the first feedforward path and the first feedback path are configured to provide a bi-directional gate interface coupled between the gate driver and the first power switch.

Abstract: A power system for actively maintaining operation includes a power supply unit electrically connected to a commercial power source, a back panel electrically connected to the power supply unit and an ON/OFF control unit. The power supply unit has an OFF state and an operating state to convert the power provided by the commercial power source for outputting. The back panel converges the output of the power supply unit and provides a driving power. The ON/OFF control unit has an input detection terminal electrically connected to the commercial power source to detect whether the commercial power source supplies power and at least one operation signal terminal to output an operation signal upon judging that the commercial power source supplies power to drive the power supply unit to enter the operating state.

Abstract: A prosthetic assembly operative to evacuate an interior of a prosthetic socket, and control systems for use therewith. The prosthetic assembly employs evacuation devices for evacuating the socket. The evacuation devices preferably include at least an electrically powered vacuum pump and a power source located within a housing. Associated control systems may be of various design and may employ wired or wireless communication. When wireless communication is employed, a hand held controller or other remote control device may be used to remotely control operation of the evacuation device.

Abstract: Disclosed is a magnetic contactor. The magnetic contactor includes a frame, a holder, a movable core, a bobbin, a fixed core coupled to a side of the bobbin and configured to absorb the movable core with a magnetic force, an elastic member provided between the holder and the bobbin, a b-contact switch configured to sense a closing completion time of the movable contact by using a mechanical mechanism relationship with the movable core, an electronic circuit part configured to receive a sensing signal from the b-contact switch and limit a current applied to the coil, and a switch manipulation member provided at one end of the movable core and configured to operate the b-contact switch.

Abstract: Divergent flux path magnetic actuation is a technique employed to move and magnetically hold an armature in electromechanical actuator devices. These actuators are typically used for linear and reciprocating application with a shaft firmly fixed to the armature to convey movement and forces. By incorporating a bearing in the armature about the shaft, rotation can also be conveyed. Further these actuators are more adaptable to energy saving applications than conventional solenoids, specifically when the control coils are parallel connected to reduce the input voltage from a power source and electrically pulsed activated from a capacitor to reduce the power drain from the power source. Thus a divergent flux path magnetic actuators with reciprocating and rotatable shaft can be used for multipurpose applications and be adapted to a variety of devices for energy savings over convention solenoids.

Abstract: A method of energizing a coil of a solenoid of a directional control valve, wherein an armature of the solenoid moves between a first position in which the solenoid is operating and a second position in which the solenoid is not operating, the method comprising energizing the coil with a voltage, controlling the voltage, detecting a current in the coil at which the armature of the solenoid moves between the first position and the second position, and using the current at which the armature of the solenoid moves between the first position and the second position increased by a margin as an operating current for energizing the coil of the solenoid.

Abstract: A triggering unit includes a tappet having a moving bearing, a power accumulator, a holding device and a printed circuit board coil. In the normal state the power accumulator acts upon the tappet with a power accumulator force in the direction of the first stop position and the holding device holds the tappet with a holding force in the second stop position. A printed circuit board coil force can be generated by an activation of the printed circuit board coil. The power accumulator, the holding device and the printed circuit board coil are formed such that the tappet rests in the second stop position in the inactive state of the printed circuit board coil and through an activation of the printed circuit board coil, the tappet assumes the first stop position such that the triggered status is given.

Abstract: A method for heating medical fluid with different supply voltages comprising: configuring first, second and third switches in electrical communication with first and second power lines, the switches configured such that (i) in a first switch state first and second heater elements are placed in series, solely via a closing of the first switch, for operation with a first supply voltage applied to the first and second power lines, and (ii) in a second switch state the first and second heater elements are placed in parallel, via the second and third switches, for operation with a second supply voltage applied to the first and second power lines, and configuring a control element to automatically set the switches in the first or the second switch state based upon a signal sent to the control element indicative of the first or the second supply voltage.

Abstract: A solenoid assembly includes a switching regulator and a solenoid electrically connected to an output signal connection of the switching regulator, the solenoid electrically actuable between an extended position and a pull-in position. The assembly includes an output level switch electrically connected to an input switching connection and the output signal connection of the switching regulator, and a timer connected to an output of the switching regulator and an input of the output level switch. The timer generates a signal at the output of the output level switch, thereby causing the output level switch to generate a hold signal at the input switching connection of the switching regulator after sensing a signal at the output signal connection. Upon receiving the hold signal at the input switching connection, the switching regulator causes an output signal on the output voltage connection to switch from a switching level to a hold level.

Abstract: An electromagnetic contactor has a pair of fixed contacts disposed and fixed maintaining a predetermined interval; a movable contact disposed to be capable of contacting to and separating from the pair of fixed contacts; an electromagnet unit to drive the movable contact; and a drive circuit driving the electromagnet unit. The electromagnet unit includes at least a movable plunger urged by a return spring, a coil to move the movable plunger, and a ring-form permanent magnet magnetized in a moving direction of the movable plunger. The drive circuit includes a power source to supply power to the coil; a pulse drive circuit to output and supply to the coil an engage pulse causing the movable plunger to perform an attracting operation and a hold pulse maintaining the attracting operation when the movable plunger is subject to the attracting operation, and a flywheel circuit having a semiconductor switching element.

Abstract: Relating to a solenoid used as a solenoid valve, a holding circuit and the like for suppressing the occurrence of back electromotive force, and preventing magnetic flux density from deterioration, without a major change of the conventional circuit constitution, is provided. A capacitor is connected in parallel with a resistance which is connected in series to a solenoid. The solenoid is driven at rated voltage by making a first switch and a second switch ON state and the solenoid is kept at holding voltage by making the first switch OFF state. The capacitor slows down the speed of change of applied voltage to the solenoid from the rated voltage to the holding voltage so that the back electromotive force of the solenoid is absorbed, which prevents the extinguishment of magnetic flux density.

Abstract: An apparatus for determining and/or monitoring at least one process variable. The apparatus includes at least one relay, at least one voltage source, and at least one voltage increasing unit. The relay, the voltage source and the voltage increasing unit as embodied, are matched to one another, and are connected with one another in such a manner that, when the voltage source supplies the relay with voltage for pull-in of the relay, the voltage increasing unit causes such an increase of the voltage applied to the relay, that the applied voltage corresponds at least to the pull-in voltage of the relay.

Abstract: Methods and apparatus provide for: at least one electromechanical relay including a coil and at least one pair of contacts, the contacts transitioning between a de-energized state and an energized state in response to current through the coil; a microcontroller having at least one tri-state output operating to produce ON, OFF, and FLOAT states; and a driver circuit operating, in conjunction with the tri-state output of the microcontroller, to control the current through. the coil of the relay such that: (i) a transition of the tri-state output from OFF to FLOAT maintains the contacts of the relay in their de-energized state through the transition, and (ii) a transition of the tri-state output from ON to FLOAT maintains the contacts of the relay in their energized state through the transition.

Abstract: A medical fluid heating system operable with different supply voltages including first and second heater elements: first and second power lines, first, second and third switches in electrical communication with the first and second power lines, the switches configured such that (i) in a first switch state the first and second heater elements are placed in series, solely via a closing of the first switch, for operation with a first supply voltage applied to the first and second power lines, and (ii) in a second switch state the first and second heater elements are placed in parallel, via the second and third switches, for operation with a second supply voltage applied to the first and second power lines, and a control element configured to automatically set the switches in the first or the second switch state based upon a signal sent to the control element indicative of the first or the second supply voltage.

Abstract: A dialysis machine having a multiple line voltage heater includes first and second heater elements, first and second switching devices connected electrically to the first and second heating elements, first and second power lines, and a control element configured to provide a first switching device state in which power at a first voltage is supplied via the first and second power lines to both first and second heater elements via both first and second switching devices and a second switching device state in which power at a second voltage is supplied via the first and second power lines to the first heater element only via the first switching device.

Abstract: A configurable semiconductor device includes at least one select pin configured to connect to one of a plurality of impedances. The impedances are external to the configurable semiconductor device and have impedance values within predetermined tolerances. A measurement circuit is connected to the at least one select pin. The measurement circuit is configured to measure electrical characteristics of the plurality of impedances, correlate the electrical characteristics to respective predetermined ranges of impedances, and generate digital output values corresponding to the correlation. A controller is configured to control a characteristic of the configurable semiconductor device based on the digital output values. Spacing between the respective predetermined ranges of impedances is based on the predetermined tolerances.

Abstract: A coloring apparatus 1 includes a coloring nozzle 31 for spouting a coloring material, a signal generator 53, and a controller 19. The coloring nozzle 31 includes an electromagnetic valve 51. The signal generator 53 outputs signals for spouting the coloring material from the coloring nozzle 31 to both a CPU 62 of the controller 19 and a driving circuit 64. The CPU 62 outputs a signal for keeping the electromagnetic valve 51 open to the driving circuit 64 when a frequency of the signals from the signal generator 53 is higher than a specific frequency. When at least one of the signals from the CPU 62 and the signal generator 53 is inputted, the driving circuit 64 applies a spike voltage A and then applies a hold voltage B to a coil 40. While at least one of the signals from the CPU 62 and the signal generator 53 is inputted, the driving circuit 64 applies a spike voltage A and then continuously applies a hold voltage B to a coil 40.

Abstract: A bistable contactor drive circuit includes a series branch comprising a first relay coil and a control signal source is connected to a power supply. A third normally closed contact and an eighth normally opened contact of the first relay are connected to a positive electrode of the power supply. A first normally opened contact and a sixth normally closed contact are connected to a negative electrode of the power supply, a second movable contact is connected to a positive electrode of the bistable contactor coil, and a seventh movable contact thereof is connected to a seventh movable contact of a second relay. A negative electrode of the bistable contactor coil is connected to a second movable contact of the second relay. Other connections in the circuit provide for operation of the bistable contactor drive circuit.

Abstract: A configurable semiconductor has a device characteristic that is controllable as a function of at least one external impedance. A measurement circuit measures an electrical characteristic of the at least one external impedance and determines a select value corresponding to the measured electrical characteristic. A first circuit controls the device characteristic as a function of the select value.

Abstract: When a power source voltage is applied to a switch control section, a control signal is supplied from the switch control section to a transistor. The transistor is placed in an ON state during a period of time corresponding to a pulse width of the control signal. The power source voltage is applied as a first voltage to a solenoid coil. On the other hand, when supply of the control signal to the transistor is stopped, the transistor is placed in an OFF state. A voltage-generating section generates a DC voltage, which is lower than the power source voltage. The transistor applies the generated DC voltage as a second voltage to the solenoid coil.

Abstract: A power supply protecting circuit configured to protect an electronic device includes a normally open switch, a voltage dropping circuit, a first rectifier, and a relay having a coil and switch. A power terminal of the electronic device is connected to a power terminal of a power supply, the other power terminal of the electronic device is connected to the other power terminal of the power supply via the normally open switch. The power terminal of the electronic device is connected to the other power terminal of the electronic device via the voltage dropping circuit, the first rectifier, and the coil of the relay in turn. The switch of the relay is connected in parallel to the normally open switch.

Abstract: An electrical relay circuit, comprising a load circuit with a series connection of a first generator (G1), a load component (R load) and a relay switch (S1) of a relay (RL1), wherein the relay switch (S1) has a closed position in which the load circuit is closed, and wherein the relay switch (S1) hat a magnetized position in which the load circuit is broken, further comprising an auxiliary circuit with a second generator (G2) for providing a control signal, wherein by means of the control signal the relay switch (S1) can be switched into the magnetised position, and wherein the auxiliary circuit keeps the relay switch (S1) in the magnetized position after the control signal is over, is characterized in that the first generator (G1) is connected to a series connection of the relay (RL1) and a constant current source (CCS) in both positions of the relay switch (S1), that the constant current source (CCS) is connected to an activation circuit (A) comprising the second generator (G2), wherein the constant current

Abstract: A switching device having a magnetic release includes a yoke having a U-shaped first section that includes a first limb having an opening in the form of a slot open towards a free end of the first limb, a second limb disposed parallel to the first limb, and a web connecting the first and second limbs. The switching device also includes a coil including a coil former, a coil winding and an armature disposed between the first and second limbs, wherein the coil is insertable into the slot towards the web and the armature extends through the slot. A restraint spring is connected at a free end of the armature and disposed outside the first limb.

Abstract: A dialysis machine having a multiple line voltage heater includes first and second heater elements, first and second switching devices connected electrically to the first and second heating elements, first and second power lines, and a control element configured to provide a first switching device state in which power at a first voltage is supplied via the first and second power lines to both first and second heater elements via both first and second switching devices and a second switching device state in which power at a second voltage is supplied via the first and second power lines to the first heater element only via the first switching device.

Abstract: The invention relates to an electrical module, comprising a first electrical interface, said module being attachable to an electrical device for connecting said first electrical interface to said device. The electrical module is characterised by at least one locking device adapted to prevent movement of said module in relation to said electrical device in at least one direction, said locking device comprising a first part which is movable along a first axis and a second part which is turnable about a second axis, the second part being movable to a locking position by turning about said second axis in response to linear movement of the first part along said first axis, said second axis having an extension which is different from the extension of said first axis, and said second part being adapted for engagement with said electrical device in said locking position.

Abstract: A method and apparatus for operating a magnetic actuator in a power switching device by transmitting at least two different electrical current waveforms to the actuator. Both waveforms are sent to the actuator from a controller in the same direction to move an actuator's armature from a first position to a second position. The first current waveform causes the armature to move from the first position to the second position. The second waveform is transmitted to the actuator to keep the armature moving towards the second position without overdriving the armature.

Abstract: A power supply protecting circuit configured to protect an electronic device includes a normally open switch, a voltage dropping circuit, a first rectifier, and a relay having a coil and switch. A power terminal of the electronic device is connected to a power terminal of a power supply, the other power terminal of the electronic device is connected to the other power terminal of the power supply via the normally open switch. The power terminal of the electronic device is connected to the other power terminal of the electronic device via the voltage dropping circuit, the first rectifier, and the coil of the relay in turn. The switch of the relay is connected in parallel to the normally open switch.